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Finding the Fourth Proportional to 612.11, 918.26 and 352.07

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Solution

The fourth proportional to 612.11, 918.26 and 352.07 is: 528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.11 : 918.26 = 352.07 : x
  2. Step 2: Convert to fraction form
    612.11/918.26 = 352.07/x
  3. Step 3: Cross multiply
    612.11x = 918.26 × 352.07
  4. Step 4: Simplify right side
    612.11x = 323,291.80
  5. Step 5: Solve for x
    x = 323,291.80/612.11
  6. Step 6: Final answer
    x = 528.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.